meyer



R. C. H. MEYER. EXPLOSION ENGINE FUEL HEATER AND VAPORIZER.

APPLICATION FILED FEB. 7. 1920.

1 59,189, 4 Patented Nov. 16, 1920.

\fl (H 14 113 23 i mwwwmw WITNESS: INVENTOR:

M. 2 JQ/ GPW ATTORNEY.

UNITED STATES PATENT OFFICE.

ROBERT C. H. MEYER, OF INDIANAPOLIS, INDIANA, ASSIGNOR OF MAUI) C. MEYER, OF INDIANAPOLIS, INDIANA- ONE-THIRD TO EXPLOSION-ENGINE FUEL HEATER AND VAPORIZER.

Specification of Letters Patent.

Patented Nov. 16, 1920;

Application filed February 7, 1920. Serial No. 356,986. i

To all-whom it may concern:

- Be it known that I, ROBERT C. H. MEYER,

a citizen of the United States, residing at,

leading to an explosion engine, for-heating and-vaporizingor more completely vaporizing arbureted air to 'form explosive mix time for the engine, the invention having reference more particularly to a heater and vaporizer that is designed to be inserted into an explosion engine intake manifold 01'.

conduit leading thereto.

An object of the invention is to prov de simple and efficient means whereby to con-- veniently heatv gaseous fuel while passing to an explosion engine, more especially'when kerosene is used, which heater shallbe of such construction as to permit of production and application at small cost and not be liable to be damaged or derangedi Another object'is to provide an improved explosion "engine fuel heater of such constructionas to be adapted to be readily'applied to engines which have already-been delivered from the factory for use.

A further object is to provide an improved electrical'heater and vaporizer which shall be of unitary form and adapted; to be-appliedfor use without structural changes of the engines in motor vehicles, and which shall be reliable, durable and economical in'use.

' With the above-mentioned and other objects in view, the invention consists in a plug or casing adapted-to be screwed into a threaded hole in the wall of a pipe or intake manifold, the plug having an electrical heater on its end to project into the pipe or manifold, the heater preferably havin external ribs or projections adapted to ra iate heat and to afford devices tending to vaporize passing fuel; and, the invention consists also further in the-parts and combinations and-arrangements of parts as hereinafter particularly described and further defined in the accompanying claims.

Referring to the drawings, Figure l is an elevation of a common type of explosion of the main part of the heater and vapor-,

izer; and, F ig. 7 is a side view'of an electrical res stance C 0ll comprised in, the

heater and vaporizer.

Similar reference characters in the different figures ofthe drawings indicate corresponding elements or features bfconstruction herein referred toin detail.

'Inthedrawings the numeral 1' indicates 'yc pb onengine, 2 a carbureter vcommonly used forearbureting air, 3 the in' take pipe or conduit extending from the earbureter'andf l the intake manifold con nected with the conduit and the engine. In the presentcasea'source of electricity, as a battery 5 is required for operation of the heater and vaporizer;

I As I preferably constructed the heateriand vaporlzer comprises a hollow plugor a plug having a chamber adjacent to one end thereof, the plug comprising a head por-, tion 6 preferably having a hexagonal exterior 7, a body or shank portion '8 that is.

smaller fl diametrically than the head portion and having external screw threads 9, whereby to secure the plug in a screwthreaded hole in the wall of the conduit or manifold. The'body or shank portion has a heater portion lO'on'its endwhich preferably has external ribs 11 to radiate heat and assist in vaporizing the passing fluid. The head portion 6'has a bore 12 extending from its front end and a counter bore 13 in the front end to receive a closure cap-plate, it being preferable to close the front end of the bore. The wall of the head portion 6 has an aperture 14 therein to receive a binding post. The body or shank portion 8 has a relatively smaller bore 15 extending from the bore 12, and the heater portion 10 has a continuing bore 16 and also an end wall 17 closing the end of the bore. The

the plug,

I ZQLi-c'onnected with the wall of the plug, pre

65 to the hollow plug;

- lg placed in thebore 16 to extend against the iner 18. A wire coil 20 adapted to constitute an electrical resistance. coilis provided ,f-U- and arranged in the 'chamberof theheaterand may extend into 'th'eshankportionof and it has a conducting wire 21, connected with one end thereof and extending. into the bore or chamber, the opposite end ofthe coil having a grounding w re 22 "connected therewith which may be variousl erably an extension wire23 being connected with the grounding wire and having a terininal portion 24 connected'therewith.that

extends into 'the bore 12 in whichit is suit 25 .ablyconnected to the wall of the head portion 6.

- The'resistance coil is suitably supports M1130 guard against fracture thereof, pref-.

erably by means of suitable material which may be poured into the heater chamber nd inclose the coil and connecting wires, as

a plastic substance 25 to become set after "bein placed in position. Such su'bstance shou d permit heat to be radiated fromthe 35,coil, to the 'wall of the heater portion and maybe electrically insulating, and in the latter case the mica lining may be omitted.

In the aperture 14 an electrically insulat ing. lining is arranged which preferably donsists of a bushing 26 and flange washers.

' 27 and 28 on the ends of the bushing. A

- binding post or screw 29 is arranged in the.

'- insulatlon and has ahead 30 arranged within .the bore 12. -The circuit wire21'has a' ring31 thereon which is secured by the head 30 against the washer 27, so as to have contact with thebinding post. The.binding post has a screw thr'eaded outer portion 32 on which nuts 33 and 34 are arranged to secure'a circuit wire 35 to the binding post. .The wire .35 is connected with a switch 36. by which connectionis made with a circuit wire 37 connected with the battery 5. l ,The front end of the bore 12 preferably is closed and the closure is inexpensively I accomplished by mean's of a cap plate 38 composed of sheet metal which, is tightly pressed. into the counter bore 13, the plate having a small slot 39 in its edge from which extends a groove40 to receive the grounding wire 2 which has a terminal 41 shaped! to conform to the counter bore 13 and fit closely in the slot and the groove, the plate conveniently securing the grounding wire of the portion-10 and the" causing the wall of d coil. arranged in the heater .and being closed A heater portion being thinnerthan the walls 110 the wall of the head circuit wire exten I a practical use, when it isfound desirableto heat the'fuel inorder to be able to promptly start the engine, more particu- 'la'i-ly when the base of the fuel is kerosene;

or in cold seasons, theelectrical switch isvo operatedtoclose the .circuit through the I heater coil, the coil becoming heated and ,o

the heater portion 'l0"to become heated; The'engine'maythenbe put in motion b ;.means of a suitable starter, so 76 as to draw the fuel through the intakeirnani ,fold, resultin- .in the fuelbeco'm'ingheated: in passing and in contact withthe electrical i heater, the; heater, which :projects into the conduitwoperating as a battle to-assistinm I causing thorough mixture of the fuel con stituents while improving-the vaporization- 'so that the engine .may-beisupplied with the most perfect'fuel much desired.'-' "a Havingthus described-the 'invention;what' is claimed as new is- 1.;A fuel heater including a hollow comprisinga head portion and: a heater por tion and also a shank portion intermediately i of the'other portions, the shank {portion be '90 ng diametrically ,larger' than the heater P nand smaller than the head 1 3 mm externally-and having. external'screw threads thereon, the wall of the heater ,porti'on be'-'*"- ing thinner than, the wall: of the ,tion, abindin'g post mounted in the head-,portiom-and an electrical resistance portion" of the -.plug1and .having circuit wires" extending therefrom into the 'head'portion of the plug,

one of the wires being connected to the bin ing post and the other' tothewall'cf the" head rtion.=. A 2., fuel heater including av hollowplu'g having a head portion and tion extending from the headtportion to sup port theplug, the plug having'a'lso a'he'ater. I portion extending from the shanki-portion at "its end, the wall of the of, theremaining portions of the plug,"'the end of the head portion of the plug having I a closure therein; a binding postmounted in I rtion of the plu and electrically insulate 5 therefrom to sup Ortthe'cOiI-and electrically msulate' it from theheater portion: and connected therein to the binding post and having also a terminal extending out into said he p r and 9 v 9 with the wall thereof.

3. A fuelheater. andvaporizer including12 5 a' hollow plug havin a relatively small po'r; tion diametrically, t e diametrically flarger portion of the plughaving a binding in the wall thereof, the smaller'portion havging an electrically insulating liningtherein, 130

pl s j shankar or the wall of also'a shank pop ,1'0'5 hil .115 electrical resistance coil arr ged n a heater P0115011 'Of the plug and ha m-g means ortion, the coil havinga l f ing out into.- saidhead v and an electrical resistance coil arranged in the insulating lining and having a circuit wire extending out beyond the lining and connected with the binding post, the coil having also a terminal extending out beyond the lining and connected with the wall of the larger portion of the plug.

4. In an electrical heater, the combination of a plug comprising a head portion and a shank portion and also a heater portion, each portion having a bore, the heater portion having an end wall closing the bore therein, the head portion having an aperture in the wall thereof, a binding post in said aperture and insulated from the wall thereof, said post being secured to said wall, an electrical resistance coil arranged in the bore in said heater portion, a circuit wire connected with one end of said coil and with said post, a grounding wire connected with the opposite end of said coil and extending to the wall of said head portion, and a cap secured to said head portion and closing the bore therein, said cap engagin said groundinglwire and securing it to sai head portion wal .5. In an electrical explosion engine fuel heater and vaporizer, the combination with the fuel-conduit of the explosion engine, of a hollow plug comprising a head portion and a shank portion and also a heater portion, said shank portion being secured in the wall of said fuel-conduit and supporting said heater portion within the fuel-conduit, a binding post secured in the wall of said head portion, a cap plate connected to the front of said head portion and having a slot in the edge thereof, an electrical resistance coil arranged in said heater portion and electrically insulated from the wall thereof, a circuit wire connected with one end of said coil and extending into said head portion in which it is connected to said post, a ounding wire connected with the opposite end of said coil and extending also into said head portion and into the slot in said cap plate whereby it is secured to the wall of said head portion, and a device in said heater portion bodily supporting said coil therein.

In testimony whereof, I afiix my signature in presence of two witnesses.

ROBERT C. H. MEYER.

Witnesses O. S. WHITEMAN, E. T. Srrvrns. 

